Add hackish go-to script

go_to.py

+#!/usr/bin/env python
+
+from astropy.coordinates import SkyCoord, Galactic, FK5
+import astropy.units as u
+import numpy as np
+from telescope import Telescope
+import sys
+from argparse import ArgumentParser
+import time
+
+dt = Telescope(consoleHost='localhost', setmode='J2000')
+print("Connected to telescope")
+
+
+if __name__ == "__main__":
+    parser = ArgumentParser(description="Point the telescope somewhere")
+    parser.add_argument("-n", "--name", help="Named source", type=str)
+    parser.add_argument("-l", help="Galactic longitude (deg)", type=float)
+    parser.add_argument("-b", help="Galactic latitude (deg)", type=float)
+    parser.add_argument("--ra", help="Right ascension (deg)", type=float)
+    parser.add_argument("--dec", help="Declination (deg)", type=float)
+    parser.add_argument("--scan", help="Scan?", action="store_true")
+    parser.add_argument("--scansize", help="Scan size (deg)", type=float, default=5.0)
+
+    args = parser.parse_args()
+
+    if args.name is not None:
+        setpoint = SkyCoord.from_name(args.name)
+    elif (args.l is not None) and (args.b is not None):
+        setpoint = SkyCoord(l=args.l*u.deg, b=args.b*u.deg, frame=Galactic).transform_to(FK5)
+    elif (args.ra is not None) and (args.dec is not None):
+        setpoint = dt.setRaDec(SkyCoord(ra=args.ra, dec=args.dec))
+
+    if args.scan:
+        scansize = args.scansize
+        centersetpoint = setpoint
+        sign = -1
+        dt.waitUntilThere()
+        
+        def wait_until_there(l, b, tolerance=0.01*u.deg):
+            diff = 2 * tolerance
+            while diff > tolerance:
+                pos = dt.getRaDec(waitForUpdate=True).transform_to(Galactic)
+                diff = max(abs(l-pos.l), abs(b-pos.b))
+            return
+
+        newl = None
+        for offset_b in np.arange(-scansize, scansize+0.0001, 0.5) * u.deg:
+            sign *= -1
+            if newl is not None:
+                wait_until_there(newl, newb, tolerance=0.1*u.deg)
+            dt.waitUntilThere(tolerance=0.1*u.deg)
+            time.sleep(2)
+            for offset_l in np.arange(-sign*scansize, sign*(scansize+0.0001), sign*1.5) * u.deg:
+                newl, newb = centersetpoint.galactic.l + offset_l, centersetpoint.galactic.b + offset_b
+                setpoint = SkyCoord(l=newl, b=newb, frame=Galactic).transform_to(FK5)
+                dt.setRaDec(setpoint)
+                print(f"{newl.deg:.1f}, {newb.deg:.1f}")
+                time.sleep(1)
+                wait_until_there(newl, newb, tolerance=.8*u.deg)
+    else:
+        dt.setRaDec(setpoint)